//
// Copyright (c) 2009, Markus Rickert
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//

#ifndef ITERATOR_H
#define ITERATOR_H

#include <iterator>
#include <Eigen/Core>

namespace Eigen
{
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto begin(::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>& t) -> decltype(t.data())
	{
		return t.data();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto begin(const ::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>& t) -> decltype(t.data())
	{
		return t.data();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto begin(::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>* t) -> decltype(t->data())
	{
		return t->data();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto begin(const ::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>* t) -> decltype(t->data())
	{
		return t->data();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto end(::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>& t) -> decltype(t.data())
	{
		return t.data() + t.size();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto end(const ::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>& t) -> decltype(t.data())
	{
		return t.data() + t.size();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto end(::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>* t) -> decltype(t->data())
	{
		return t->data() + t->size();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto end(const ::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>* t) -> decltype(t->data())
	{
		return t->data() + t->size();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto size(::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>& t) -> decltype(t.size())
	{
		return t.size();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto size(const ::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>& t) -> decltype(t.size())
	{
		return t.size();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto size(::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>* t) -> decltype(t->size())
	{
		return t->size();
	}
	
	template<typename Scalar, int Rows, int Options, int MaxRows, int MaxCols>
	auto size(const ::Eigen::Matrix<Scalar, Rows, 1, Options, MaxRows, MaxCols>* t) -> decltype(t->size())
	{
		return t->size();
	}
}

#endif // ITERATOR_H
